Properties of a proxy to a service instead of method parameters?

Question

 

Hi,

 

My service exposes the following methods

 

ConnectionInfo         Connect(ServerId,StoreId)

Recipient[]                GetRecipients(ServerId,StoreId,MessageId)

bool                          SendMessage(ServerId,StoreId,From,To,Body)

 

Combining the ServerId and StoreId result in a key to a cache holding ‘MailServer’ com components,

All methods accepts ServerId and StoreId 

I want to let the client to use different proxy instances to the same mail server

I was wondering if it is a good idea to make ServerId and StoreId, properties of a proxy?

I understand that a custom OperationContext Is the way to do it?

Assuming it is a good idea  my API will look like the following

 

   ConnectionInfo Connect(ServerID,StoreID)

   Recipient[]        GetRecipients(MessageId)

   Bool                SendMessage(From,To,Body)

 

 

 

Proxy proxy =  new Proxy()

ConnectionInfo info =proxy.Connect('ServerID','StoreID')
proxy.StoreID = info.StoreID

Proxy.ServerID=info.ServerID

 

Thanks

  

Answer 1

Hi,

  If you have StoreId and ServerId as separate variables in wcf service side ,Then this  required parameters you can put into a class as like below:

[DataContract]
public class MyParamaters
{
  [DataMember]
  StoreID
  [DataMember]
  ServerID
...
}

once you create a proxy, this class will also be available to the client application and now client will pass instance on the class as input parameter to these methods as below:

Myref is wcf service reference name.

MyRef.Proxy proxy =  new MyRef.Proxy();
MyRef.MyParameters obj = new MyRef.MyParameters();

obj.ServerID = <value form client App>;
obj.StoreId = <value form client App>;

ConnectionInfo info =proxy.Connect(obj)


Hope this will give you guideline...

Regards

Mahesh Sabnis

 

Answer 2

Thanks

But I want to avoid it; I want a ‘statefull’ proxy to a stateless service

 

Tomer

Answer 3

Hi,

If I understand you correctly, you can use a singleton patten to maintain the state between your client and service.
If you set [ServiceBehavior(InstanceContextMode = InstanceContextMode.Single)] on your service implementation (the singleton class), you can do this:

 MySingleton singleton = new MySingleton();
 ServiceHost host = new ServiceHost(singleton);
 host.Open();

Thanks
Binze

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Answer 4

No,i want to create a VIEWSTATE like for WCF service.instead of caching or passing parametrs to a method,pass them as part of the message
and extract them out of the operationcontext

I think i understand now how  to do it.

Thanks.